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LOANS HELD FOR INVESTMENT, NET - Loan Categories (Details) - USD ($) $ in Thousands | Jun. 30, 2022 | Dec. 31, 2021
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Loans held for investment, net: |  |
Loans held for investment, net of fees and costs | $ 9,660,907 | $ 9,244,661
Allowance for loan losses | (79,426) | (83,853)
Total loans held for investment, net | $ 9,581,481 | 9,160,808
Small Business Administration ("SBA") Paycheck Protection Program ("PPP") [Member] |  |
Loans held for investment, net: |  |
Loan and leases carry guarantee rate | 100.00% |
Total real estate loans |  |
Loans held for investment, net: |  |
Loans held for investment, net of fees and costs | $ 8,689,230 | 8,294,204
One-to-four family residential and cooperative/condominium apartment |  |
Loans held for investment, net: |  |
Loans held for investment, net of fees and costs | 691,586 | 669,282
Multifamily residential and residential mixed-use |  |
Loans held for investment, net: |  |
Loans held for investment, net of fees and costs | 3,654,164 | 3,356,346
Commercial real estate ("CRE") |  |
Loans held for investment, net: |  |
Loans held for investment, net of fees and costs | 4,091,372 | 3,945,948
Acquisition, development, and construction |  |
Loans held for investment, net: |  |
Loans held for investment, net of fees and costs | 252,108 | 322,628
Commercial and Industrial ("C&I") Loans |  |
Loans held for investment, net: |  |
Loans held for investment, net of fees and costs | 960,888 | 933,559
Commercial and Industrial ("C&I") Loans | Small Business Administration ("SBA") Paycheck Protection Program ("PPP") [Member] |  |
Loans held for investment, net: |  |
Loans held for investment, net of fees and costs | 18,900 | 66,000
Other Loans |  |
Loans held for investment, net: |  |
Loans held for investment, net of fees and costs | $ 10,789 | $ 16,898

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